638 Apex 5/16” Hex Drive Bit Holder, 5/16” Hex Insert offers the flexible use of insert bits with a variety of tools used throughout the aviation industry and automotive repair sector. Many Apex bit holders are available in magnetic and quick release forms, allowing for the use of a variety of insert bits in power tool applications.

638 Apex 5/16” Hex Drive Bit Holder, 5/16” Hex Insert features durable construction and flexibility at a great price. Apex quality begins with select raw materials, only high grade tool steel is used. Each Apex Bit Holder is manufactured to the tightest tolerances in the industry. Closer tolerances mean you get a better fit and less cam-out or stripping with Apex bit holders, which in turn keeps work areas free of damage and reduces incidence of bit failure and costly re-work.